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(No Model.) A} N. WOOD-ARI). 2 Sheets-Sheet 1.

MECHANICAL MOVEMENT. No. 539,846. Patented May 28, 18951" (No Model.) 2Sheets-Sheet 2. A. N. WOODARD.

MECHANICAL MOVEMENT. v No. 539,846. Patented May 28, 1895.

QQQQQQ a,@ a Q B Q a I EDD BBQ a e UNITED STATES PATE T OFFICE. V

ALVIN N. WOODARD, OF MANSFIELD, OHIO, ASSIGNOR OF ONE-HALF TO VENIAH O.ROUTZAHN, SAME PLACE. I

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 539,846, dated May 28,1 895.

A Application filed December 15, 1894. Serial No. 531,891. (No model.)

To all whom it may concern; I

l 3e it known that}, ALVIN N. WOODARD, a citizen of the United States,residing at Mans- I field, in the county of Richland and State of Ohio,have invented a certain new and useful Improvement in MechanicalMovements, of which the following is a full, clear, and exactdescription.

The object of this invention is to provide a mechanical movement bywhich power may be transmitted through differential or speedmultiplyinggearing to a machine to bedriven.

The principle of the invention is illustrated in an internal gear withinwhich is a rolling pinion from which a weight is suspended, the saidgear having external sprockets, and being suspended within a sprocketchain which is fixed immovably atone end and has its other end securedand wound about a rotating drum which is fast toa shaft. This shaft maybe rotated by hand to wind the chain about it, and the said shaft isrotated in the opposite direction by allowing the suspended weight toact by gravity and rotate the gear ring. Inasmuch as the weights pinionhas a constantly shifting center of gravity in the internal gear, thepinion acts not only to throw its weight upon the chain, but also toexert a pulling force thereon, thereby increasing its effective force inunwinding the chain to generate power; and when in re-winding the weightis shifted to the fixed side of the chain, and its pinion climbs thegear ring on that side, by the shifting of the center of gravity, thereis a decrease in the dead weight to be lifted, and thus the machine isrewound or reset with less expenditure of force and very muchmore easilythan were the weight to be lifted bodily. The power is taken off bygearing with a countershaft or otherwise as may be desirable orconvenient.

' Having thus stated the nature and principle of my invention,I willproceed now to describe the best mode in which Ihave contemplatedapplying that principle, and then will particularly point out anddistinctly claim the part, improvement or combination which I claim asmy invention.

- In the accompanying drawings, illustrating a motor for a grindingmill, at being themill,

and b a counter upon which it is erected. A suitable frame 0 is placedbeneath the counter, and upon it is mounted a horizontal shaft d, onwhich-is fixed a hand-wheel 6, having knobs e, a drumf, and a collar g.Next the collar and loose on the shaft (1, is a gear-wheel g, whose hubhas the clutch member h, the other member h of such clutch being splinedto the shaft and being held in engagement with the clutch member h bymeans of a spring 2' coiled about the shaft. The counter-shaft j is alsomounted horizonally upon the frame 0 and is supplied with afast pinion kin mesh with the gear-wheel g; and this shaft j is provided with asprocket wheel Z, through which the motion may be transmitted to themill by means of a sprocket chain mpassed about a sprocket wheel at onthe mill shaft. Shown in dotted lines in Fig. 1.

I wish to observe here that I do not limit my invention to the manner oftransmitting the power of the shaft d, but for illustration, I havedescribed this simple means as one that is convenient and readilyavailable and very eflicient.

A sprocket chain 0 is fastened by one end to the drumf, and falls thencedownwardly, as through an openingp in the floor, and the other end ofsaid chain is made fast, as at 0', to some stationary objects, as forexample, the door, ata point on the other side of the drum from thatfrom which the chain 0 falls. Within the loop of the chain thus formedis arranged the combined internal gear and sprocket wheel r of thisinvention. As will be seen, the preferred form of this device is a ring,and internally it is provided with the spurs or teeth 0", whileexternally it is provided with the sprockets r r engage the links of thechain o. A pinion s is arranged within this ring and its teeth mesh withthe teeth 4 of said ring. This pin- These sprockets ring 0 may bevaried, but the best results will be obtained by having a ring ofconsiderably larger diameter than the drum; and so also, the proportionsbetween the internal gear of the ring and the pinion 8 may be varied,but the best results may be obtained by having a pinion of considerablylarger diameter than that shown in the drawings, although theproportions shown in the drawings are effective.

The operation is as follows: By turning the hand-wheel e in thedirection of arrow2, the chain will be wound up upon the drum; and inthe act of so winding up the chain, the center ofgravity of thesuspended weight will be changed to the right, Fig. 1, and its pinion swill exert a pulling force upon the said ring to rotate it in thedirection of the rising chain, thereby decreasing the dead weight to belifted, and hence facilitating the winding of the drum. The pull in thisinstance is against a fixed point and is distributed to a moving point.When the rotation of the shaft 01 ceases, the tendency of the weight isto find its normal center of gravity and thereafter, if the wheel beturned in the direction of arrow 3, so as to start the machine to putforth its power, the weight acts upon the ring through exerts a pullingforce upon the rolling ring,

and thus is added to the force of the weight this pulling force, toeffect the rapid and powerful rotation of the shaft. By this shifting ofthe centers of gravity of the weight, there is added to the efiectiveforce of the weight nearly two-thirds increase.

What I claim is 1. A mechanical movement comprising a chain made fast atone end and applied to a rotatable body at the other end, a combinedinternal gear and sprocket wheel arranged in the loop of the chain, anda weight suspended from said wheel and connected therewith by means of apinion, substantially as and for the purpose described.

2. A mechanical movement comprising a shaft, a drum thereon and ahand-wheel for manually operating the said shaft and drum, a chain madefast to said drum at one end and having its other end made fast to afixed body at a point located in a plane on the side of the drumopposite that from which the chain descends from the drum a combinedinternal gear and sprocket wheel arranged in the loop of such chain anda weight suspended from said wheel through the medium of a pinion,substantially as and for the purpose described.

In testimony whereof I have hereunto set my hand this 14th day of-December, A. D.

ALVIN N. WOODARD. Witnesses:

WM. I-I. FINCKEL, HARRY Y. DAVIS.

